A surprise on the other side will surely be a sight to behold. They're SOOOO confident he'll win again in a "landslide" - which is funny because 2016 was nowhere near a landslide. That kind of irrational exuberance is precisely what I was coasting on in 2016, and now they are doing it too. I remember what it felt like for me finding out he won. For them, if he loses in 2020, it will be 100x worse because they're in a cult and refuse to believe he can do wrong. They are willing to go down with the ship.
Them getting doused with a cold dose of reality if he loses won't be pretty. I fully expect riots and Trumpers taking up arms because "illegals voted" (there will be no evidence, again). If he loses, he will refuse to accept it because egotistical pieces of shit like him will never admit someone beat them fair and square. He will make up a slew of reasons for losing, if he actually does lose, and his base will be there to defend his honor or die trying - as if he had an honor which needed defending in the first place.